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JPL Small-Body Database Browser
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47455 (1999 XK227)
Classification: Main-belt Asteroid          SPK-ID: 2047455
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2197875869659136 5.5722e-08  
a 2.477443108600945 1.0544e-08 au
q 1.932931865916212 1.333e-07 au
i 1.243426048269595 3.65e-06 deg
node 94.14242352848787 0.00021539 deg
peri 257.2106769372895 0.00021557 deg
M 79.75855798027546 1.0189e-05 deg
tp 2458284.942319684641
(2018-Jun-15.44231968)
3.9206e-05 TDB
period 1424.308159403072
3.90
9.093e-06
2.49e-08
d
yr
n .252754291705298 1.6136e-09 deg/d
Q 3.021954351285679 1.2862e-08 au
  Orbit Determination Parameters
   # obs. used (total)      911  
   data-arc span      7970 days (21.82 yr)  
   first obs. used      1997-03-09  
   last obs. used      2019-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55107  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:42:15  

Additional Information
 Earth MOID = .926797 au 
 Jupiter MOID = 2.40792 au 
 T_jup = 3.446 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO412500  
diameter diameter 1.710 km 0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.219   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

47455 (1999 XK227)          Discovered 1999-Dec-15 by Spacewatch at Kitt Peak
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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